1-Hydroxyimidazole Derivatives IV. Quaternary Salts Derived from 1-Hydroxy-1<i>H</i>-imidazoles
作者:Gerhard Laus、Josef Stadlwieser、Wilhelm Klötzer
DOI:10.1055/s-1990-27018
日期:——
General procedures for the synthesis of 3-substituted 1-alkyloxy,1-arylmethyloxy, and 1-phenyloxyimidazolium salts are described. 1,3-Bis(arylmethyloxy)imidazolium salts can be prepared using phase transfer conditions for the alkylation of 1-hydroxy-1H-imidazole 3-oxides. When the hydroxy group of 1-hydroxy-1H -imidazoles is protected during quaternization, 1-substituted imidazole 3-oxides are obtained.